Abstract
This study evaluated the vertical discrepancy of implant-fixed 3-unit structures. Frameworks were constructed with laser-sintered Co–Cr, and vacuum-cast Co–Cr, Ni–Cr–Ti, and Pd–Au. Samples of each alloy group were randomly luted in standard fashion using resin-modified glass-ionomer, self-adhesive, and acrylic/urethane-based cements (n = 12 each). Discrepancies were SEM analyzed. Three-way ANOVA and Student–Newman–Keuls tests were run (P < 0.05). Laser-sintered structures achieved the best fit per cement tested. Within each alloy group, resin-modified glass-ionomer and acrylic/urethane-based cements produced comparably lower discrepancies than the self-adhesive agent. The abutment position did not yield significant differences. All misfit values could be considered clinically acceptable.
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Acknowledgments
This investigation was supported by research projects: UCM 41/2009 and UCM 164/2010. The authors would like to thank the Prótesis SA Dental Laboratory (Madrid) for the technical advice received and for manufacturing the structures. We are also grateful to the Centre of Data Processing, Computing Service for Research Support, Complutense University of Madrid (U.C.M.) for the assistance with the statistical analysis.
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Oyagüe, R.C., Sánchez-Turrión, A., López-Lozano, J.F. et al. Evaluation of fit of cement-retained implant-supported 3-unit structures fabricated with direct metal laser sintering and vacuum casting techniques. Odontology 100, 249–253 (2012). https://doi.org/10.1007/s10266-011-0050-1
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DOI: https://doi.org/10.1007/s10266-011-0050-1